素相互作用调控棉纤维伸长发育的分子机制研究.pdf

22 1 Vol. 22, No. 1 2010 1 Chinese Bulletin of Life Sciences Jan., 2010 1004-0374(2010)01-0007-08 · · (100871) Q 9 4 6 Q 7 1 A Cross-talk among ethylene, very long-chain fatty acids, reactive oxygen species, brassinosteroid and gibberellin mediates cotton fiber elongation MEI Wen-qian, QIN Yong-mei, ZHU Yu-xian* (The National Laboratory of Protein Engineering and Plant Genetic Engineering, Peking University, Beijing 100871, China) Abstract: Fast polarized growth of cotton fiber cell requires biosynthesis of various phytohormones, biosynthesis of plasma membrane and cell wall components, cell wall loosing and expansion. Study on phytohormones, the most important regulators, is always a hot topic of cotton fiber development. Here, we briefly summarized the research progresses in biosynthesis and signaling pathways of ethylene, brassinosteroid, gibberellin, reactive oxygen species and very long-chain fatty acids, and their cross-talk during fiber cell elongation. Key words: ethylene; brassinosteroid; gibberellin; reactive oxygen species; very long-chain fatty acid; fiber elongation (GA)(BR) [2,3] [4,5] [6] [1] 2009-05-11 * E-mail zhuyx@ 8 ETR1ETR2ERS1ERS2 EIN4 [14], (3 d 1~2 d-3~1-2 DPA) (0-25 DPA) (two component system) (20-45 DPA)(45-50 DPA)4 ( (MAPKKK)CTR1CTR1 ) ETR1/CTR